STRUCT RBSP(9)

💜 struct rbsp(9) — a Kernel API Manual moment 💜

okay bestie, so this is a page from the Kernel API Manual, and it's literally all about struct rbsp — the state object for handling a raw byte sequence payload. iykyk 🎀

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✨ NAME ✨

struct rbsp — the state object for handling a raw byte sequence payload. that's it, that's the vibe. 🌸

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✨ SYNOPSIS ✨

here's the icon itself, no cap, copy it exactly:

struct rbsp {
    u8 *data;
    size_t size;
    unsigned int pos;
    unsigned int num_consecutive_zeros;
    struct nal_rbsp_ops *ops;
    int error;
 };

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🫶 Members 🫶

okay so let's meet the cast, main character energy each and every one:

• data — pointer to the data of the rbsp. it's giving "here's where the actual bytes live." 💅
• size — maximum size of the data of the rbsp. the ceiling, the limit, the "don't go past this" of it all.
• pos — current bit position inside the rbsp. yes, bit position — we're not playing around with bytes here, we're counting bits, periodt. ⭐
• num_consecutive_zeros — number of zeros before pos. keeping track of the zero streak like a little scorekeeper 🎀
• ops — per datatype functions for interacting with the rbsp. the little toolbox of function pointers. 🔥
• error — an error occurred while handling the rbsp. so if this is set, something went sideways 😭 (not me being dramatic, it literally means an error happened).

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🦋 Description 🦋

so this struct is passed around the various parsing functions and tracks the current position within the raw byte sequence payload. literally its whole job — it's the little cart that follows the parser around keeping track of where we are 💖

the ops field is the clever bit, and i'm obsessed: it allows you to separate the operation — i.e., reading/writing a value from/to that rbsp — from the structure of the NAL unit. this is what allows you to have a single function for iterating the NAL unit, while ops has function pointers for handling each type in the rbsp. one iterator to rule them all, and the type-specific behaviour lives in ops. slay. 👑

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/media/platform/allegro-dvt/nal-rbsp.h — go read it, bestie, it's right there 🧚

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that's the whole page! source is ./drivers/media/platform/alleg... and it's dated October 2026 — so like, from the future, iconic 💜✨ see you in the next man page, mwah 🎀